Sash fastener



Feb. 11, 1930.

SASH FASTENER Filed July 11, 1927 L. s. LEASURE 1,746,734

ment of the sash being accommodated, when Patented Feb. 11, 1930 s PATENT OFFICE LELAND s. LEASURE, on ouLvEn CITY, CALIFORNIA SASI-I FASTENER Application filed. July 11,

My invention is a sash fastener for a window sash or the like.

An object of my invention is the construction of a sash fastener which has a latching element to swing transversely of a sash, such as an upper sash, and in its outer position engaging a lower sash. Thls latching element is held in place by a retainer or detent which prevents its displacement, hence, preventing relative sliding of the sash.

A further object of my invention is the construction of a sash fastener which has a neat appearance and occupies but little room on an upper sash and requires no fittings whatever on the lower sash, the latching elein its inoperative position, in a recess of the upper sash. 1

In constructing my sash fastener I mount a face plate on an upper sash, 'coveringthe recess, this face plate having a slot therethrough, through Which operates a latch. This latch is pivotally mounted with a pivot 1 on the back of the plate. The latch is spring 5 pressed to swing outwardly so that it may engage a lower sash, and is maintained in its outward position by a pivotally mounted detent connected to the face plate, this detent normally hanging downwardly and preventing movement of the latch, thus preventing relpltive movement of the upper and lower sas My invention is illustrated in the accompanying drawings, in which:

Figure 1 is a perspective view of a window sash with my fastener in the operative position.-

Figure 2 is a vertical section through the fastener with the latch engaging the lower sash and locked by the detent.

Figure 3 is a section similar to. Fig. 2, showing the latch in its inoperative position and held therein by the detent to allow. sliding of the sash. 1 i

Figure 4: is a rear elevation of the fastener.

My invention utilizes a face plate 11 having an arcuate depressed section 12 and with a rectangular slot 13 through the plate and through the depressed section. The plate has some holes 14: for securing to the sash and is 1927. Serial No. 204,856.

preferably beveled at its lower edge 15 to facilitate sliding of one sash relative to the other. Mounted on the back of the plate there are a pair of brackets 16 in which is mounted a shaft 17 and on this shaft there is a pivotally mounted latch 18. There is a coiled spring 19 interconnecting the latch and the shaft, said spring being under tension to swing the latch into its outward or operative position. The latch has a base side 20 and a projecting arm 21.

A detent 22 is connected to the plate by a pivot pin 23, this pivot pin being in the depressed portion 12 of the face plate. This latch has an arcuate edge 24 which conforms to the edge of the arcuate depression12. The

detentis sufficiently wide to swing across the slot 13, and when tilted to one side or in an upper position, clears this slotto allow movement of the latch. I =The-manner ofoperation of thefastener and the functioning thereof is substantially as follows: a i Theface plate is mounted, forinstance, on anupper sash 25 which has a recess 26 therein of suflicient depth and height to accommof date the latch andthe lugs behind the plate. Thefastener is in its operative position when located as shown in Figs. 1 and 2, in which case the spring has pressed the latchoutwardly from the recess until the base'2O comes in contactwith the upper surface of a lower sash 27. The detent 22 is then allowed to drop by gravity until it passes behind the arm 21 of the latch, thereby preventing the latch being forced back into the recess, as

would be the case if the lower sash were raised or the upper depressed without the detent being in the position shown.

When it is desired to open the window by 1 moving the sash the detent is swung to one side, allowing the latch to be pressed by the finger into the recess 26 and then the latch is either moved by the finger or allowed to hang down by gravity, engaging the base of t? the latch, as indicated in Fig. 3, and completely confining the latch in the recess 26. Hence the sashes are free to move without any obstruction.

While I have illustrated my invention as applied to a window sash, it is apparent that it may be utilized in other constructions. As gravity, acting on the detent, draws it down into its lowermost position, an equivalent spring arrangement could be utilized to move the detent if it is locked, so that it will not move in this manner .by gravity.

Various changes may be made in the principles of my invention without departing from the spirit thereof, as set forth in the description, drawings and claims.

I claim: 7

1. A sash fastener for limiting movement -of one sash in respect toanother and comprising a plate adapted to be secured to one sash covering a recess therein, said plate having a Slot, a latch, means pivotally mounting said latch behind the plate to rock through said slot, the latch having a base and a projecting arm extending angularly therefrom, a detent pivotally connected to the plate to swing in a plane parallel thereto andacross the said slot, said detent being adapted to engage the base and hold the latch retained in the said recess or to engage the said arm and hold the latch projecting through the said slot, said base being adapted to engage the other sash.

2. A sash fastener comprising in combination a face plate having a slot therein, a latch, means pivotally mounting the latch on the back of the plate, said latch having one side forming a base and an arm projecting angularly from thebase,.a detent pivotally mounted'on the'plate to swing in a plane parallel to said plate, the said detent depending downwardly by gravity, and the said latch in one position having its face engaged by the detent, the latch being retained behind the plate, and in another position, having the said projecting arm engaged by the detent and the latch projecting through the said slot.

3. A sash fastener, as claimed in claim 2, the said plate having an arcuate depression, and the latch having a lower'curved edge conforming to the curvature of'the arched part of the depression.

In testimony whereof: I have signed my name to this specification.

' LELAND S. LEASURE. 

